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US3860178A Expired / Lapsed US ⏱️ 0.0 years remaining

Fuel injection nozzle

Assignee: Robert Bosch GmbH
•
Filing: 1974-01-21
•
Granted: 1975-01-14
•
Expires: 1994-01-21
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Abstract

Abstract A fuel injection nozzle for internal combustion engines includes a nozzle holder. A pressure channel leads, in sections, to a nozzle pressure chamber, along a spring chamber and passes eccentrically in the nozzle holder. The pressure channel has a connecting bore passing radially to the longitudinal axis of the nozzle holder. A drain channel of the spring chamber passes in the vicinity of a pressure channel connection bore in a longitudinal direction of the nozzle holder. An intersection is provided between the pressure channel and the drain channel. A pressure socket is arranged in the connecting bore for separating the pressure channel and the drain channel. An end portion of the socket protrudes into the nozzle holder axially before and after the intersection. Sealing members are provided in each side of the intersection, and a recess means having a surface and defining a passageway for leak channel traverse flow is provided in the intersection.

Inventors

  • 👤 Kurt Seifert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 16:15
CPC Classifications
F; F02; F02M; F02M55/00; F02M55/002; F02M55/004; F02M55/005

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 155 words
In a fuel injection nozzle for internal combustion engines having a nozzle holder, a pressure channel leading in sections to a nozzle pressure chamber, along a spring chamber, and passing eccentrically in the nozzle holder, the pressure channel having a connecting bore pAssing radially to the longitudinal axis of the nozzle holder, and having a drain channel of the spring chamber which passes in vicinity of a pressure channel connection bore in a longitudinal direction of the nozzle holder, the improvement comprising an intersection between said pressure channel and said drain channel, a pressure socket arranged in said connecting bore for separating said pressure channel and said drain channel, said socket having an end prtion protruding into said nozzle holder axially before and after said intersection, sealing means provided on each side of said intersection, and recess means having a surface and defining a passage for leak channel transverse flow is provided in the intersection.
Claim 2
Dependent Claim 155 words
In a fuel injection nozzle for internal combustion engines having a nozzle holder, a pressure channel leading in sections to a nozzle pressure chamber, along a spring chamber, and passing eccentrically in the nozzle holder, the pressure channel having a connecting bore pAssing radially to the longitudinal axis of the nozzle holder, and having a drain channel of the spring chamber which passes in vicinity of a pressure channel connection bore in a longitudinal direction of the nozzle holder, the improvement comprising an intersection between said pressure channel and said drain channel, a pressure socket arranged in said connecting bore for separating said pressure channel and said drain channel, said socket having an end prtion protruding into said nozzle holder axially before and after said intersection, sealing means provided on each side of said intersection, and recess means having a surface and defining a passage for leak channel transverse flow is provided in the intersection.
Claim 3
Dependent Claim 42 words
A fuel injection nozzle according to claim 1, wherein said sealing means includes one seal disposed on a face of said pressure socket protruding into said nozzle holder, and a second seal arranged on an inner face formed within said nozzle holder.
Claim 4
Dependent Claim 28 words
A fuel injection nozzle according to claim 2, wherein said intersection is formed by a bore which passes substantially perpendicular to the longitudinal axis of said nozzle holder.
Claim 5
Dependent Claim 28 words
A fuel injection nozzle according to claim 1, wherein said intersection is formed by a bore which passes substantially perpendicular to the longitudinal axis of said nozzle holder.

References Cited (Backward Citations)

US2439257A Cited
US2613996A Cited
US3097795A Cited
US3131866A Cited
US3464627A Cited
US3589610A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-13 1978-07-15 1979-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-13 1982-07-15 1983-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-13 1986-07-15 1987-01-14 $7700.00 Window Closed / Lapsed

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